A (roller derby league) may be based in a US-city.Logical formLearned from35 sentences. Rosters may pertain-to a league.Logical formLearned from35 sentences. A nature may pertain-to a league.Logical formLearned from35 sentences. A level may pertain-to a (league system).Logical formLearned from35 sentences. Goalies may pertain-to a league.Logical formLearned from35 sentences. A (conduct policy) may pertain-to a league.Logical formLearned from35 sentences. A league may be announced.Logical formLearned from35 sentences. A league can be as a female.Logical formLearned from35 sentences. A league can be powerful.Logical formLearned from35 sentences. Some defense can be in a league.Logical formLearned from35 sentences. Records can be in a league.Logical formLearned from35 sentences. A percent may pertain-to a league.Logical formLearned from35 sentences. Guys can be around a league.Logical formLearned from35 sentences. Respect can be around a league.Logical formLearned from35 sentences. A stance may pertain-to a league.Logical formLearned from35 sentences.